Disagree, hatred towards boomers gradually accelerated on an acceleration line graph, but it didn't become REALLY trendy until around 2017, with the "boomerhate" trend peaking in popularity in 2019 with the "OK boomer" meme. I would argue the libertarianosphere, as well as the social justice wokesters and gradually growing communist communities became more and more skeptical of boomers leading up to 2015, but then all of that was briefly put on pause/hold so that the 2016 election could take place and the candidates couldn't be accused of being "boomer" candidates (as I'm sure they both would be today minus some of Trump's immigration speeches). However, the second the election was over, the "Anti-SJW" community got cocky/overconfident and decided to do Charlottesville, collapsing the radical right and giving way to BreadTube and the neo-wave, more class-oriented but still very intersectional and less furry-oriented, more psychological subversion and children-oriented far-left of the internet today. This paved the way for what was left of the dissident right to regroup under people like Tucker Carlson and Nick Fuentes, having a more third positionist outlook, and with the growth of Stupidpol and things like the Yang Gang, paving the way for a UNIVERSAL hatred of the Washington Consensus of the 80s, 90s and early 00s by the youth and "zoomers", with the last potential opposition members among zoomers (young people who supported Hillary and neoliberalism getting radicalized by BreadTube/Lefty Reddit, and alt-lite Trumpet zoomer types who would have stayed in the coalition if it weren't for the debacle that was Charlottesville getting radicalized, made apolitical, or turned left).
TL;DR the political environment of now has been perfectly masterminded to make zoomers HATE the beliefs of boomers as much as a generation possibly ever can, being the exact opposite, regardless of political "side" or left v.s. right, on issues like Israel, foreign aid, NAFTA, free trade, military intervention, bank bailouts, corporate subsidies, the UN, boomer's identity politics causes, suburban living/zoning laws, political lobbying, and even free speech.